I had a problem uploading a photo today. The colons are added automatically by an app on my phone which I use for adding annotations.

I'm asking for this to be changed on the forum as it's generally a difficult task to rename files on a smartphone without installing a file manager. And even then it can be a tedious process.

I would rather see the colons either stripes out or replaced with something else such as an underscore; anything to allow the file to be uploaded without me having to go and change the name and go through the process again.